Coated fixture for stirring fork guide hole drilling machine

Abstract

The invention relates to a coated fixture for a stirring fork guide hole drilling machine. The coated fixture comprises a fixture body, a pressure plate, a bushing, a drill bushing, a base, a V-shaped block, a stop pin, a sleeve head, a threaded rod, a nut and a bracket, wherein the drill bushing is positioned on the pressure plate of the fixture, and is fixedly connected with the pressure plate of the fixture; the replaceable bushing is arranged between the drill bushing and the pressure plate of the fixture; the pressure plate is fixedly connected to the top of the fixture body; a stirring fork positioning mechanism consisting of the V-shaped block, the base and the stop pin is fixedly connected to the lower part of the pressure plate and the front of the fixture body; a spiral rapid-withdrawal clamping mechanism consisting of the threaded rod, the sleeve head, the nut and the handle is arranged in front of the stirring fork positioning mechanism through the bracket; the bracket is fixedly connected to the fixture body. The coated fixture is improved on the basis of a conventional fixture, and has the characteristics of high friction and wear resistance, long service life, low manufacturing cost, small positioning errors, simplicity in clamping, high production efficiency and the like.

Description

technical field [0001] The invention relates to a special fixture for a shift fork guide hole drilling machine with a physical vapor deposition diamond-like coating, which is suitable for drilling guide holes of a large batch of a type of machine tool headstock variable speed shift fork with a similar structure. Background technique [0002] At present, the special fixtures for shift fork parts on the market are generally customized. When machining large quantities of parts, the machining factory usually develops, processes and manufactures special fixtures by itself. The disadvantage of using special fixtures is that the wear of the special fixtures will gradually increase during mass production and clamping, which will affect the clamping accuracy and reduce the accuracy of the product, and the components need to be replaced frequently and the design and manufacturing cycle is long. Large, resulting in low production efficiency. The present invention aims at the structure...

AI Technical Summary

Problems solved by technology

[0003] The present invention is to improve the guiding mechanism and clamping mechanism of some former special fixtures for shifting forks, and carry out physical vapor deposition diamond-like coating treatment on the guiding and clamping mechanisms, so as to provide a coating fixture for drilling machines with guiding holes for shifting forks. , after the V-shaped block, stop pin, and drill sleeve are treated with diamond-like coating, the wear resistance of the fixture is enhanced, and the clamping and machining accuracy are further improved, which solves the low wear resistance, gradually decreasing precision and poor efficiency of the fixture. , Frequent replacement of components, redesign and manufacture, etc., make the operation easier for workers, thus greatly improving the production efficiency of large batches of parts

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